GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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matter
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a substance
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plasma
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mixture
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Detailed explanation-1: -A pure substance is a form of matter that has a constant composition (meaning that all samples of this substance have uniform composition) and properties that are constant throughout the sample (meaning that there is only one set of properties such as melting point, color, boiling point, etc.
Detailed explanation-2: -A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
Detailed explanation-3: -A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture.
Detailed explanation-4: -It is known as the homogenous composition. All the parts of uniform composition are equally arranged and distributed. It is opposite to the aspect of heterogenous composition which is not uniformly arranged.
Detailed explanation-5: -A substance is matter that has a uniform and unchanging composition. For example, water is a pure substance.